Light Source Module with YAG and Quantum Dots for Edge Color Correction
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Solution Overview
Problem
Display panels with quantum dot elements often exhibit bluish regions, affecting image quality due to inadequate color saturation and gamut, particularly at the edge regions.
Innovation Solution
A light source module comprising a light guiding plate, light-emitting elements, and quantum dot elements, where the light-emitting elements include YAG to convert blue light into green and yellow light, and quantum dots further convert light into monochromatic colors, achieving white light mixing for enhanced color saturation, and a processor adjusts gamma curves for different display regions to compensate for color intensity differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a blue light LED chip with quantum dot element is used to achieve wide color gamut display, then color saturation is improved, but bluish regions appear on the edge region of display panels
Solution Approach 1:
The patent applies different gamma curves to different regions of the display panel. The processor identifies the edge region and applies a first gamma curve specifically to this region, while applying a second gamma curve to the central region. This local differentiation allows the edge region's color characteristics to be independently adjusted, resolving the bluish region issue without compromising the overall color saturation achieved by the quantum dot elements.
2Reliability
If quantum dot elements are applied to display panels to achieve high color purity, then color saturation is improved, but bluish regions appear on the edge region
Solution Approach 1:
The patent maintains the quantum dot elements throughout the display panel to ensure high color purity and saturation, while applying region-specific gamma correction. The processor selectively applies a first gamma curve to the edge region and a second gamma curve to the central region, allowing the quantum dot's color purity benefits to be preserved while compensating for the bluish region artifact in the edge area.
3Ease of manufacture
If uniform gamma curve is applied to the entire display panel, then manufacturing simplicity is maintained, but color intensity differences between central and edge regions cannot be compensated
Solution Approach 1:
The patent introduces region-specific gamma curves controlled by the processor to compensate for color intensity differences between central and edge regions. By identifying the edge region and applying a first gamma curve different from the second gamma curve applied to the central region, the system achieves uniform color intensity across the display panel while maintaining manufacturing simplicity through software-based correction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution improves the appearance of bluish regions on display panels, achieving high color saturation, wide color gamut, and good image quality by adjusting color intensity and gamut across different display areas.
Implementation Method 1
The at least one light-emitting element is disposed on the light incident surface to provide a first light, and at least one light-emitting element includes yttrium aluminum garnet (YAG)
Implementation Method 2
The quantum dot element is disposed on the light emitting surface of the light guiding plate, and is configured to transfer part of the first light into a first monochromatic light
Implementation Method 3
The light guiding plate has a light incident surface and a light emitting surface
Data Source
AI summary
A light source module and an electronic device are provided. The light source module includes a light guiding plate, at least one light-emitting element and a quantum dot element. The light guiding plate has a light incident surface and a light emitting surface. The at least one light-emitting element is disposed on the light incident surface to provide a first light beam, and includes yttrium aluminum garnet (YAG). The quantum dot element is disposed on the light emitting surface of the light guiding plate, and is configured to transfer part of the first light into a first monochromatic light. White light can be obtained by mixing by the first light and the first monochromatic light.